Pull request #3101: 无JIRA任务 update

Merge in VISUAL/fineui from ~GUY/fineui:master to master

* commit '73b66eeb7790b344341718608086f7bc7075f122':
  update

src/base/list/virtualgrouplist.js

@@ -79,7 +79,7 @@ BI.VirtualGroupList = BI.inherit(BI.Widget, {
     },
 
     _isAutoHeight: function () {
-        return this.options.rowHeight === "auto";
+        return !BI.isNumber(this.options.rowHeight);
     },
 
     _renderMoreIf: function () {